Do metadata not provider_info
Refactoring Claims

Metadata is more general than provider_info.
Use metadata schema is available.

New method get_metadata in EndpointContext

Use key and password if static key handling is necessary.

… doe not cache any information.

There should be a read/write list file storage class.

There is a difference between client_id and entity_id.

All about client_id being registered through configuration or not.
Added a new function set_request_object()

(dpop.py) Use base64 encoded has instead of hexdigest.
Several services may demand dpop headers.
(jar.py) removed functions that was not used. construct_request_parameter() moved elsewhere.
(par.py) With or without request object.

Defined PushedAuthorization service.
Used key jar wrapper.

Refactored. Moved construct_request_parameter and get_request_object_signing_alg to a module of their own.
construct_request_uri was also moved.
Fixed tests

Fixed tests.
Made sure there was a reasonable value on _service in authorization.py Authorization.oidc_post_construct()
When creating request_args use local info.